The Jawbone ICON "Thinker" is a High Quality mid tier headset offering multiple features. It offers unprecedented ease of use with AUDIOTONES voice prompts telling the user remaining talk time and announces numerical caller ID. It also incorporates an easy-to-operate slide On-Off switch, and a micro-USB charger with flexible memory cable. The THINKER offers the best audio in the category with NOISEASSASSIN 2.5 noise reduction, simultaneous multipoint (lets users manage calls from two different phones at the same time)."Set it and forget it" audio eliminates the need to adjust volume from one caller to the next. Updateable firmware enables users to get the latest software and enhancements online. It allows users to personalize their experience with an array of convenient apps. BLUETOOTH® v. 2.1 + EDR, up to 4.5 hours talk time, weight is 8.8 grams (with earbud).